Duplex gearing for hoisting-drums.



A. LAMBERT.

DUPLEX GEABING FOB HOISTING DRUMS.

APPLICATION nun IA! 11, 1908.

913,901 Patented Mar. 2, 1909.

3 SHEETS-SHEET 2.

A. LAMBERT. DUPLEX BEARING FOR HOISTING DRUMS. APPLICATION FILED MAYll, 1908.

Patented Mar. 2, 1909.

3 SHEETS-SHEET 3.

' "citizen of the United States, residing3 ASHER LAMBERT, OF NEWARKpNEW JERSEY.

. nurmx cmnmeron nors'rme-nnoms.

Specification of Letters Patent.

Patented March 2, 1909.

Application filed m 11, 1903. Serial No. 432,093.

To all whom 'it may concern: Be it known that I, ASHER LAMBERT, a at 1 Johnson avenue, Newark, county of ssex, and State of New Jersey, have invented certam new and useful Improvements in Duplex Gearing for Hoisting-Drums, fully described and represented in the followin specificationand the accompanying drawings, forming a part of the same.

The present invention relates to that class of hoisting machines in which a drum is rotated. by connection to a motor-shaft,

. a section 0 the motor-shaft and connections on line 3-3 in Fig.

ence to the annexed drawing, in whi commonly by means of friction-wheels; and theturning of the drum to lower the load, when required, is effected by disconnecting the friction-wheels from the drum and controlling the rotation of the drum by a brake. finch an operation of the drum is sufiicient in a machine where a single hoisting drum is used; but in certain cases the holster isprovidedcwith two drums, and where it is required to turn both of the drums with exactly the same speed, either in hoisting or lowering, it is found difiicult to accomsihflsih this by friction-drivers, and still more cult to lower both drums at the same rate by means of mere friction-brakes. V

The present invention furnishes duplex gearing for connecting each druin ,with the motor-shaft, one train of such gearing ineluding friction-wheels which form a readily detachable connection between the motorand the drum, and the other train consistm of toothed gear-wheels which, when each isconnected thereby to the motorshaft, forms a positive connectionbetween the two drums and compels them to rotate in perfect unison. A brake can be used in the usual manner for lowering when the are thus sitively connected by {gothed gear-whee the speed of the drums mg. gear-w eel connection.

The invention will be understood by lreferc Figure 1 is a side'elevation of a hoister em odymg the invention; Fig. 2 is a cross sec ion of the frame on line 22 in Fig. 3, with the; outer drum-shaft remove d the drum and aring carried thereby- 3 is he 0 utch- :is a plan of the hoister withoneb thedrums rfectly equalized by their toothed Zgand Fig. 4'

and earin in section at the center line of the rum-s aft. Fig. 5 shows an alternative construction.

The hoister-drum a is shown provided with steam engine cylinders 12 which are in practice connected with a crank-shaft c which forms the motor-shaft for the hoister.

An electric, or other motor may be used place of a steam engine. '4

d and d are drum-shafts carrying drums e and e, and journaled in bearings f upon the frame at opposite sides of the motor-shaft c,

and pinions g, g, are attached to the motorshaft to drive cog-wheels h, h, provided each with a conical friction-driver 41' which is fitted to a hollow cone j upon one end of the ad'acent drums. Each drum is provided with the usual means in a hand-lever. 7c, screw Z, and crosskey m for pressin it toward the friction-driver 'i, when it is esiredto rotate the drum by frictional connection with the motor-shaft. Each drum is rovided-at one end with a brake-wheel n avin strap 0 which, when actuated in .the usua manner, servesto control the backward rotation of the drum in lowering its load.

' The construction so far described is common, and the improvement, consists furnishmgeach drum, in addltion to lts friction gearing, with a toothed cog-wheel p or p which meshes with a pimon or q upon the motor-shaft. When either rum is engaged with the motor-shaft b the pimon or q and the friction driver etached, the rum is rotated positively by the motor-shaft and can By reversing the engine or motor be made to raise or lower the load at a positive rate. When both drums are engaged with the motor-shaft by the gears p, p and pimons g and the friction-drivers detached rums are compelled to move positively in unison, and ropes can be wound up or unwound from the two drum'sat recisely the same rate of speed. When sue a positive connection is not desired, the inions or g n the motor-shaft may be etache from u .t e gear-wheels p or p, by shifti endwise, or may be disconnected from t e 1notor' shaftby disengaging a suitable clutch.... 'Both the constructions are shown'in the means provided for engaging or disengaging-4i);

both pinions at once withxthe gear-wheels so that a le hand-lever may suflice lid izdnnect or fionnect both drums-with the motor-shaft. The pinion g for driving the drum e is fitted to turn loosely upon the shaft and held from end movement by means not shown, and is connected with the 5 shaft, when re uired, by a 'aw-clutch 1' which is movab e longitudinal ly upon-the shaftby a forked clutch-lever s. The pinion g for driving the drum e is fitted to a s line t upon the motor-shaft and can be move endwise to Withdraw its teethfrom the toothed wheel 1) by a forked clutch-lever u- The levers s and 'u. are connected by a link '0 and are actuated simultaneously by a hand-lever .11; ..nd connecting-rod 'w. Both clutchlevers are fulcrumed upon a cross-tie x between the side frames 0., one end of such cross-tie being shown in Fig. 3, and the frame a indicated merely in dotted ines to avoid obscuring the clutch connections. The pinion g turns with the motor-shaft when'=dis engaged from its toothed wheel 1), as shown in Fig. 2; but the pinion g continues tomesh with its gear-wheel p when the jaw-clutch r is retracted, as shown in Fig. 2, and this pinion is therefore turned upon the motorshaft by the rotations of the drum e when propelled by its friction-driver.

In Fig. 4, the pinions are both shown coupled to the motor-shaft and to the toothed 30. wheels upon the drums, so as to connect both drums positively and make them rotate in unison. Any clutching mechanism may be employed which serves to connect the toothed wheels upon the drums positively 3.5 with the motor-shaft so as to connect them together when rotation in unison is required.

Fig. 5 shows a slight'modification of the construction in which both the frictiondrlvers 'i are placed at the-same side of the 49 frame (that is, at the same'ends of the two drums), and the gear p is set in line with the gear 10' so that a sing e pinion g suffices to connect the drums positivel Fig. 2, omitt' the clutchlever 'u; and-connecting the ro 21/ directly with the link'v. Where two g g are used, as hownin Figs.,.2 an 4, it; is o vious The means for shiftingsuch pinion wou d be the same .45 as is shown in that they may be moved separately if desired instead of by a single hand-lever 10.

Having thus set forth thenature of the invention What is claimed herein is: I

"1. Ina hoister, the combination, with a hoister-frame, of a motor mounted thereon, a motor shaft driven thereby, two drums mounted upon the frame, frictioncaring connecting the motor-shaft detachabl y with each of the said drums, and toothed gearwheels for connecting the motor-shaft detachably with the two drums and adapted, when e aged with the drums, to rotate them posltively in unison.

2. In a. hoister, the combination, with a hoister-frame, of a motor with motor-shaft driven thereby, drum-shafts mounted in bearings upon the hoister-frame at opposite sides of the motor-shaft, drums fitted to turn thereon and having each a toothed gear, wheel rigidly attached, pinions upon the motor-shaft meshing with the said toothed gear-wheels, and means with a single handlever for operating the same to engage the shaft and both pinions at once with the toothed unison.

3. In a hoister, the combination, with a hoister-frame, of a motor with motor-shaft gear-wheels to rotate the drums in driven thereby, drum-shafts mounted in v bearings upon'the hoister-frame at opposite sides of the motor-shaft, drums fitted to turn thereon and having each a toothedgear- Wheel rigidly attached, pinions upon the motor-shaft mes with the said toothed gear-wheels, clutcheversmovable'in opposite directions for disengaging the shaft and pinions fromthe toothed gear-wheels upon .the drums, vand a single hand-lever with suitable connections for simultaneously movin the clutch-levers in o posite directions. testimony whereof I aye hereunto-set my hand in the presence of two subscribing witnesses."

ASHER LAMBERT. .Witnesses:

- T. M. WATSON, J12,

TnomAs'S. CRANE. 

